32-34-01
ALL ú ú 01 Page 403 ú Jan 28/01
A
757 MAINTENANCE MANUAL
E. Remove the Retract Actuator
S 034-003
(1)
Disconnect the hydraulic lines from the retract actuator.
S 494-004
(2)
Install caps in the ports and plugs in the lines.
S 484-049
(3)
Install the hanger assembly and the clamp assembly parts of the retract actuator sling equipment (Fig. 402).
S 034-026
(4)
Remove the pin (14) and insert (15) to disconnect the rod end of actuator from the shock strut (Fig. 401, View B-B).
S 484-048
(5)
Install the pump on the actuator and retract the rod end.
S 034-006
(6)
Remove the pin (6) to disconnect the head end of the actuator from the fittings on the aft wheel well wall.
S 984-007
(7)
Use the fishpole hoist to lower the actuator (5) from the wheel well.
TASK 32-34-01-404-008
3. Install the Retract Actuator for the Nose Landing Gear (Fig. 401, 402)______________________________________________________
A. References
(1)
AMM 12-12-01/301, Hydraulic Systems
(2)
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems
(3)
AMM 32-00-15/201, Landing Gear Door Locks
(4)
AMM 32-34-00/501, Nose Gear Extension and Retraction
B.
Equipment
(1)
Fishpole Hoist - Commercially Available
32-34-01
ALL ú ú 01 Page 404 ú Jan 28/01
A
757
MAINTENANCE MANUAL
(2)
Actuator Extension/Retraction Pump, Landing Gear -A32007-53, -90, -153 (As Applicable)
(3)
Nose Gear Retract Actuator Sling - B32007-1
C.
Consumable Materials
(1)
D00153 Fluid, Hydraulic - BMS 3-11, Type IV
(2)
D00633 Grease - BMS3-33 (Preferred)
(3)
D00013 Grease - MIL-G-23827 (Alternative)
D.
Parts
~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Washer | 32-21-00 | 01 | 61 | | | 2 | Washer | | | 70 | | | 3 | Nut | | | 80 | | | 4 | Washer | | | 73 | | | 5 | Retract Actuator | | | 81 | | | 6 | Pin | | | 50 | | | 7 | Packing | | | 45 | | | 8 | Alignment Washer | | | 60 | | | 9 | Tang Washer | | | 65 | | | 10 | Nut | | | 75 | | | 11 | Antirotation Bolt | | | 10 | | | 12 | Washer | | | 15 | | | 13 | Nut | | | 20 | | | 14 | Pin | | | 55 | | | 15 | Lubrication Insert | | | 25 | 2.......….......…...................................…...........….....…........1
E. Access
(1) Location Zone
711 Nose Landing Gear
32-34-01
ALL ú
ú 01 Page 405
ú May 28/01
A
757 MAINTENANCE MANUAL
F. Procedure
S 614-009
(1)
Fill the actuator with hydraulic fluid.
S 494-010
(2)
Put the actuator (5) in the sling (Fig. 402).
S 984-011
(3)
Hoist the actuator into the wheel well between the wall fittings of the aft wheel well and the shock strut lugs.
S 644-012
(4)
Apply grease to the pins, bolts and washers before you install them.
S 434-013
(5)
Install the pin (6), washers (1, 2, and 4), and nut (3) to connect the retract actuator to the wall fittings on the aft wheel well (Fig. 401, View A-A). Do the steps that follow to tighten the nut (3):
(a)
Do a check of the nut (3) for self-locking torque. Measure it in pound-inches and write it down
(b)
Add 90-125 pound-inches (10.2-14.1 newton-meters) to the self-locking torque that you measured
(c)
Tighten the nut (3) to the torque range you calculated
(d)
Loosen the nut (3) to the nearest locking position. Install the cotter pin.
S 864-042
(6)
Make sure the pressure is removed from the left hydraulic system (AMM 29-11-00/201).
S 434-040
(7)
Connect the hydraulic lines to the actuator.
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(79)
